143145523 has 4 divisors (see below), whose sum is σ = 143895168. Its totient is φ = 142395880.

The previous prime is 143145517. The next prime is 143145533. The reversal of 143145523 is 325541341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325541341 = 761 ⋅427781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143145523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143145491 and 143145500.

It is not an unprimeable number, because it can be changed into a prime (143145533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374536 + ... + 374917.

It is an arithmetic number, because the mean of its divisors is an integer number (35973792).

Almost surely, 2^143145523 is an apocalyptic number.

143145523 is a deficient number, since it is larger than the sum of its proper divisors (749645).

143145523 is an equidigital number, since it uses as much as digits as its factorization.

143145523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749644.

The product of its digits is 7200, while the sum is 28.

The square root of 143145523 is about 11964.3438181958. The cubic root of 143145523 is about 523.1094791815.

Adding to 143145523 its reverse (325541341), we get a palindrome (468686864).

The spelling of 143145523 in words is "one hundred forty-three million, one hundred forty-five thousand, five hundred twenty-three".